package org.infinispan.commands;
import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectOutput;
import java.util.UUID;
import java.util.concurrent.CompletableFuture;
import org.infinispan.commands.remote.BaseRpcCommand;
import org.infinispan.commons.marshall.MarshallUtil;
import org.infinispan.util.ByteString;
import org.infinispan.util.concurrent.CompletableFutures;
import org.infinispan.util.logging.Log;
import org.infinispan.util.logging.LogFactory;
/**
* Command to cancel commands executing in remote VM
*
* @author Vladimir Blagojevic
* @since 5.2
*/
public class CancelCommand extends BaseRpcCommand {
private static final Log log = LogFactory.getLog(CancelCommand.class);
public static final byte COMMAND_ID = 34;
private UUID commandToCancel;
private CancellationService service;
private CancelCommand() {
super(null);
}
public CancelCommand(ByteString ownerCacheName) {
super(ownerCacheName);
}
public CancelCommand(ByteString ownerCacheName, UUID commandToCancel) {
super(ownerCacheName);
this.commandToCancel = commandToCancel;
}
public void init(CancellationService service) {
this.service = service;
}
@Override
public CompletableFuture<Object> invokeAsync() throws Throwable {
log.trace("Cancelling " + commandToCancel);
service.cancel(commandToCancel);
log.trace("Cancelled " + commandToCancel);
return CompletableFutures.completedNull();
}
@Override
public byte getCommandId() {
return COMMAND_ID;
}
@Override
public void writeTo(ObjectOutput output) throws IOException {
MarshallUtil.marshallUUID(commandToCancel, output, false);
}
@Override
public void readFrom(ObjectInput input) throws IOException, ClassNotFoundException {
commandToCancel = MarshallUtil.unmarshallUUID(input, false);
}
@Override
public boolean isReturnValueExpected() {
return true;
}
@Override
public int hashCode() {
int result = 1;
result = 31 * result + ((commandToCancel == null) ? 0 : commandToCancel.hashCode());
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (obj == null) {
return false;
}
if (!(obj instanceof CancelCommand)) {
return false;
}
CancelCommand other = (CancelCommand) obj;
if (commandToCancel == null) {
if (other.commandToCancel != null) {
return false;
}
} else if (!commandToCancel.equals(other.commandToCancel)) {
return false;
}
return true;
}
@Override
public String toString() {
return "CancelCommand [uuid=" + commandToCancel + "]";
}
}